Le roy conklin



June 27, 1961 W. LE ROY CONKLlN 2,990,115

WAGE COMPUTER Filed Dec. 5, 1956 2 Sheets-Sheet 1 FIG. I.

TIME, START a FINISH HOURS WORKED v \r 4 V WAGES soc. sec. $|.oo/ HR.

i |.oo/ HR.

.so- .Ol

/ J 4 INVENTOR $0 46 w. LEE) CON/(LIN ATTORNEY FIG. 2.

June 27, 1961 w. LE ROY CONKLIN 2,990,115

WAGE COMPUTER Filed Dec. 5, 1956 2 Sheets-Sheet 2 III] IIIIIIIIIIIIIIIIII ufll I I L a 3 w L IN VENTOR FIG. 3.

W. LEROY CON/(LIN ATTORNEY United States 2,990,115 1 WAGE COMPUTER I WalterLe Roy Conklin, Sunnybrook, Md.

(Phoenix P.0., Md.) Filed Dec. 5, 1956, Ser. No. 626,330

2 Claims. (Cl. 235-795) I cations, since it can most readily be adapted to other uses and applications with minor adjustments and/ or :modifications. 7

Quite often in computingthe hours and wages earned by a worker during a known period, the computer invariably makes a mistake in computing the total time elapsed 1 during the period worked and correspondingly the wages earned for the period, such as a workday of unknown length.

It is an object of this invention, therefore, to provide a mechanically operated computing device for accurately determining the time which has elapsed between the starting time and finishing time during a working period.

Still another objectof thisinventioir is to provide a mechanically operated computing device which will not only compute the total elapsed time between. a starting time and a finishing time,-but which will also determine the total wages earned during the total'elapsed-timefas well as the social security contributions due on thefltotal Wages.

Another object of this invention isto provide a device.

for accurately computing the increment or increments of time elapsed betweenknown starting 'andfinishing' times.

To provide a computing device which is economical to manufacture, efficient and reliable=in operation,' 'and easy to manipulate and maintain, are even'other -objects of this-invention. I

And even still other 'objectsflof. this invention are'ro provide a computing device whichis compact, sturdy, and easy to disassemble and reassemblefwhen the replacement of wornor damaged,,components isrequired.

These and other objects of this invention astwell-asthe attendant advantages thereof, will be readily appreciated as the same become better understood by reference to the following detailed. description,Whengonsidered in connection with the accompanying 'drawin g'sj'in which:

FIG. 1 is a perspectiveview'oftheleoinputer comprising this invention; a FIG. 2 is an' enlargement of adetail of FIG; 1; FIG. 3 is .a 'sideeleva'tionpartiallyfin cross section of (the computer 'shown' in FIG. 1; and I FIG. 4 isa'cro'ss section taken along linef4 -4 of Referringfnow to FIGS. land 3 of the drawings, there is illustrated'a' computing device" 10 comprising this'invention.'. This device'10' incl-tides arectangular shaped base port members 14 and 16 mounted thereon for supporting the main components of the computing device. These support members 14 and 16 are identical in construction, so only support member 16 will be described hereinafter.

Each support member 14 and 16 has a housing 32 and 30, respectively, at its upper end which is internally threaded, as shown by reference numeral 98, for receiving an insert 56, which is externally threaded, as shown wall 84 therebetween for support.

lice

2 by reference numeral 58. This insert 56 is utilized to close one end of the housing 30.

The insert 56 as well as the wall of the housing 30 opposite thereto has an aperture 52 provided therein for receiving a shaft 66. A bushing 68 is journalled on the shaft 66 in aperture 52 in the vertical wall of the housing 30.

Insert 56 has a recess 100 provided therein. This recess 100 is centrally located with respect to the aperture in its wall. Recess 100 is utilized for receiving one end of a coiled spring 60, which is positioned about the shaft 66 in the housing 30. The other end of the coiled spring 60 is positioned against a washer element or stop 54. This washer element or stop 54 is secured to the shaft 66. The washer 54, in turn, due to the force exerted on it by the coiled spring 60 pushes against the bushing 68, to force the shaft 66 inwardly.

The shaft 66 has a reduced portion 64 at its outer end, which is externally threaded. A circular disk 20, having a centrally located threaded aperture 62, is positioned on the threaded portion 64 so that the shaft 66 can be rotated and pulled outwardly. As pointed out above, the other vertical support 14, with housing 32 and circular disk 18, correspond to vertical support 16, housing 30, and circular disk 20, respectively. Shaft 88 is arranged similar to shaft 66 and is, in reality, an extension of shaft 66 Y A drum is mounted on the shafts 66 and 88. This drum consists oftwo separate sections, as best seen in FIGS. 1 and 3. The first section of the drum includes a frusto-conical element 22 and a cylindrical element 26 which are integrally formed and which have a partition The frusto-conical section 22 is closed at its smaller base by a wall 89. This wall 89 has a threaded aperture provided therein for receiving a bearing 70. Bear- 'ing 70 is secured on the shaft 66, and its outer face is in contact with bushing 68. Partition or support wall 84 is also provided with a threaded aperture for receiving a bearing 72, which is secured on shaft 66, as shown in FIG. 3.

The other section of the drum consists of a frustoconical element 24 and a cylindrical element 28 correaperture for receiving a bearing 78, secured on shaft 88. A bearing, corresponding to bearing 70, is positioned at the end of frusto-conical section 24.

The abutting ends of cylindrical elements 26 and 28. arevprovided with meshing teeth 42, as shown in FIGS. 1, 2, and 3, the purpose of which will be described, more in detail subsequently.

The inner end of shaft 88 has a reduced portion 82 which fits into a mating aperture in the inner end of shaft 66. Split rings 74 and are positioned in slots in shafts 66 and 88 adjacent the bushings 72 and 78, respectively, to prevent the ends of the shafts 66 and 88 from 12 having twotriangula'rshaped,vertically spa'ceasu being .pulled out of engagement.

In the event that it is desired to eliminate the bearings 70; 72, 78, and 70, the drum sections can be mounted directly on the shafts 66 and 88 by pinning walls 84 and 86, at their lower ends directly to shafts 66 and 88, respectively, so that the drum will rotate as an integral unit when arranged as shown in FIG. 3, or each section thereof will rotate independently of each other when the sections are pulled apart and the disks 20 and 18 are rotated. It is also to be pointed out that suitable oil caps can be provided to oil critical points, if needed.

The ends of the coiled spring 60, one in each hous- 40, 46, and 48 can be formed of metal ing 30 and 32, pushing against the insert 56 and the washer 54, cause the drum sections to remain in the position shown in FIGS. 1 and 3. By pulling outwardly on the circular disks 18 and 20, the teeth 42 of the drumsections can be disengaged and the sections can be ro tated relative to each other by hand.

Referring now to FIGS. 1 and 2, a circular scale 38 is mounted on the exterior surface of cylindrical element 26. This scale '38 is suitably graduated in hours and smaller increments, such as quarter hours, corresponding to the twenty-four hours in a day. A second scale 40, suitably graduated in hours and smaller increments, such as quarter hours, is also positioned on the exterior surface of the cylindrical element 28 adjacent scale 38. An index 44 is provided on scale 40 to indicate the zero point of scale 40, Scales 38 and 40 can be either rigidly or removably secured to cylindrical elements 26 and 28, respectively. If desired, these scales 38 and 40 can be painted or etched directly on the cylindrical elements 26 and 28.

In addition to scales 38 and 40, any number of other scales, such as a wage scale 46, and a social security scale 48 for computing social security contributions based on total wages, can be positioned adjacent the hours worked scale 40, as shown in FIG. 2. As best seen in FIGS. 1 and 4, the cylindrical element 28 has a slot 50 provided'in its outer surface'for receiving theends "90 and 92 of a scale, such as scale 48. Thus, any number of scales, such as 46 and 48, can be slipped over. the

'frusto-conical element 24 of the right drum section and positioned on the cylindrical element 28 by securingthe bent ends thereof in the slot 50, as shown best in FIG.-4.

A transparent element 30A, having its uppenedge arranged parallel to the index lines on the scales 38, 40,46, and 48, and secured to the base 12 by thumb screws 32, as shown in FIG. 1, can be utilized to facilitate reading of the various scales 38, 40, 46,, and 48, when the device .10 is being used to compute hoursworked, total wages, and social security contributions.

The entire computing device can be made of light weight metal, such as aluminum, or plastic, or combinations of both. The bearings used in the device ltl can be of the self-lubricating type, if desirable. The scales 3 8,

or plastic material.

'In actual operation, let it be assumed that aworker starts to work at 8:00 a.m. and that he stopswork at 9:45 a. m. The two cylindrical elements 26 and 28;, are moved relative to each other by pulling outwardly on the disks and 18 to disengage the teeth 42 of the two drum sections. With the drum sections disengaged, one section is moved relative to the other sectiori by turning the appropriate disk 20 and shaft 66, or disk 18 and shaft 88 until the index mark 44 of scale 40 is opposite the starting time, namely 8:00 a.m.

By reading down the scale 38 to the finishingtime, which was assumed as 9:45 a.m., and then reading directly opposite on scale 40, it can be determined that the worker worked a total of 1 hour and 45 minutes. If it is assumed that the hourly rate is $1.00 per hour,

then the total wages for the time worked is read on scale 46 as $1.75, since this scale is one hour of work is equal to $1.00.

If it is assumed that the workers social security contributions are 2 percent on a dollar, as shown on scale graduated so that 48, then the social security contributions are read from 'scale 48 as 0.04 cent.

It is obvious, therefore, that the hours of work, total wages, social security contributions, and other calculations can be obtained-by utilizing the proper scales on the cylindrical elements 26 and 2 8 of the drum sections, as .describedabove. Any number.of..wage and hour scales can be 1 placed ;on the drum, graduated in coarse or finedncrements toobtain the accuracy desired.

If it is desired to disassemble the computer device 10, thecircular disks 20 and 1-8 are unscrewedfrom .the threaded ends of shafts '66 and 88, respectively, and the inserts 56are then removed from the housings 30 and 32. The coiled springs 60 arethen removed, and then the shafts 66 and 88 are moved outwardly to move the drumv sections apart by disengaging the teeth 42. A screwdriver or the like is then used to remove the split rings 74 and 80.

The shafts 66 and 88 are then removed by moving them outwardly to release the drum sections. The bearings 70, 72, 78, and '70 can then be removed by unscrewing from/the drum sections. The device 10 can be reassembled in the reverseorder.

Obviously manymodifications and variations of the present invention are possible in light of the above teach- It is, therefore, to be. understood that within the scope of the appended claims the invention may be practiced otherwise. than as specifically described.

Whatisclaimed is: l

I. A computing device, comprising, a base having a pair of parallel spaced and vertically extending triangular shaped support members mounted thereon, a rotatable. shaft extending from each of said spaced members 7 and arranged in axial alignment, a cylindrical shaped drum member mounted oneach said shaft for rotation with its respective shafin theopposite ends of said drummembers being of frus to-conical shape and centrally positioned about their respective shafts, the conical shape ends of said drummembers beingspaced from their respective support members, each said drum member' being arranged for rotation independently of as .well as in unison with the other drum member, a scale mounted on the peripheral surfacefof each ofsaid drum members and arranged to correspond with each other, a spring encompassing one of said shafts and arranged to bias one of said drum members into engagement with the. other of said drum men bers,j;t he adjacent edges of said drum members being serrated for lockin g said drum members together so that they can be rotated in unison.

arrangement as recited in claim 1, and an annushaped handle on the opposite ends of each shaft for use in disengaging said drum members from each other.

References Cited in thefile of this patent UNITED STATES PATENTS 823,426 ,Meilicke June 12, 1906 1,400,363 Kennedy Dec. 13, 1921 1,409,583 Robinson Mar. 14, 1922 1,411,357 Hornbostel Apr. '4, 1922 1,459,279 Butcher June 19, 1923 1.597.4 3 Ritow Aug. 24, 1926 2,445,264 George 'July 13, 1948 2,486,945 Herrington Nov. 1, 1949 2,788,174 J Taylor Apr. 9, 19 57 

